The Geology and Extinct Volcanos of Central France |
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Page 1
... deep valley of the Rhone , which , running nearly due north and south , separates it from the ranges east of that river , in the departments Drôme , Isère , and Hautes Alpes . On the south - west also this high ground rapidly descends ...
... deep valley of the Rhone , which , running nearly due north and south , separates it from the ranges east of that river , in the departments Drôme , Isère , and Hautes Alpes . On the south - west also this high ground rapidly descends ...
Page 4
... deep gorges , scarcely wider anywhere than the bed of the river that flows at the bottom of each . The stratification being nearly horizontal , though dipping to the south or south - west , this formation exhibits a series of flat ...
... deep gorges , scarcely wider anywhere than the bed of the river that flows at the bottom of each . The stratification being nearly horizontal , though dipping to the south or south - west , this formation exhibits a series of flat ...
Page 12
... deep water , perhaps ( as is suggested by Sir Charles Lyell ) borne upon the masses of littoral reeds to which they were attached , when these were torn away from the banks by storms , and floated out by the winds and currents to great ...
... deep water , perhaps ( as is suggested by Sir Charles Lyell ) borne upon the masses of littoral reeds to which they were attached , when these were torn away from the banks by storms , and floated out by the winds and currents to great ...
Page 14
... deep and wide valleys channelled out through them . To these I shall revert in a later page . No traces of rocks of a volcanic character occur in the con- glomerates or sandstones which constitute the lower terms of this freshwater ...
... deep and wide valleys channelled out through them . To these I shall revert in a later page . No traces of rocks of a volcanic character occur in the con- glomerates or sandstones which constitute the lower terms of this freshwater ...
Page 16
... deep bluish - black , probably coloured by volcanic ashes . 5. Numerous calcareo - volcanic strata , similar to No. 1 ; some of them being ribboned with different colours , yellow , brown , or bluish - black , determined , it seems , by ...
... deep bluish - black , probably coloured by volcanic ashes . 5. Numerous calcareo - volcanic strata , similar to No. 1 ; some of them being ribboned with different colours , yellow , brown , or bluish - black , determined , it seems , by ...
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Common terms and phrases
Allier ancient appears Ardèche augite Auvergne basin bed of basalt breccia calcareous calcareous peperino Cantal cellular Central France chain of puys channel character Clermont clinkstone colour columnar compact conglomerate considerable contains covered crater Crown 8vo current of lava deposits distance district domite dyke east Edition elevation eruption evidently excavation Fcap feet felspar fissures flowed formed fragments freshwater formation geologists Gergovia gneiss granitic platform Graveneire Haute Loire heights hill Illustrations lacustrine lake lava lava-current Le Puy Limagne limestone marls mass matter Mezen miles Mont Dore Monts Dôme mountain neighbouring numerous observed occupied olivine Pariou peperino plain Plate plateau points Pomel Pont Portrait Post 8vo prisms probably Puy de Dôme recent remarkable ridge rise river rock sandstone scoriæ side Sioule slope strata stream of lava substance summit surface tertiary thick tion trachyte tuff valley vent Vivarais volcanic cones Vols Woodcuts
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